1)Lable vertex v as reached.
2)Initialize Q to be a queue with only v in it.
3)while Q is not empty repeate through steps 4 , 5 & 6.
4)Delete a vertex w from the queue.
5)for all vertices u adjacent from w repeate through steps 6.
6)if u has not been labeled add u to the queue Q , lable u as reached.

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